Sublime Text 3 bookmark hover toggle

hover_bookmark_toggle.py

import sublime
import sublime_plugin


class BookmarkEventListener(sublime_plugin.EventListener):
    def toggle_bookmarks(self, view, point):
        # Get existing bookmarks and create a region for the new one
        bookmarks = view.get_regions("bookmarks")
        new = sublime.Region(point)

        # Update the bookmarks list to add or remove this region as needed
        if new not in bookmarks:
            bookmarks.append(new)
        else:
            del bookmarks[bookmarks.index(new)]

        # Update the bookmarks and hide the popup
        view.add_regions("bookmarks", bookmarks, "bookmarks", "bookmark",
            sublime.HIDDEN | sublime.PERSISTENT)
        view.hide_popup()

    def on_hover(self, view, point, hover_zone):
        # Only handle hovers over the gutter
        if hover_zone != sublime.HOVER_GUTTER:
            return

        # Show a popup; when the link is clicked, trigger the toggle command,
        # which gets told what file the bookmark should toggle in, and at
        # what point (Which is the first character of whatever line you
        # hover next to in the gutter)
        view.show_popup('<a href="#">Toggle Bookmark</a>',
            sublime.HIDE_ON_MOUSE_MOVE_AWAY,
            point,
            500, 100,
            lambda href: self.toggle_bookmarks(view, point))